Exploring Coreference Uncertainty of Generically Extracted Event Mentions (CROSBI ID 191958)
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Podaci o odgovornosti
Glavaš, Goran ; Šnajder, Jan
engleski
Exploring Coreference Uncertainty of Generically Extracted Event Mentions
Because event mentions in text may be referentially ambiguous, event coreferentiality often involves uncertainty. In this paper we consider event coreference uncertainty and explore how it is affected by the context. We develop a supervised event coreference resolution model based on the comparison of generically extracted event mentions. We analyse event coreference uncertainty in both human annotations and predictions of the model, and in both within- document and cross-document setting. We frame event coreference as a classification task when full context is available and no uncertainty is involved, and a regression task in a limited context setting that involves uncertainty. We show how a rich set of features based on argument comparison can be utilized in both settings. Experimental results on English data suggest that our approach is especially suitable for resolving cross-document event coreference. Results also suggest that modelling human coreference uncertainty in the case of limited context is feasible.
event extraction; coreference resolution
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Podaci o izdanju
7816
2013.
408-422
objavljeno
0302-9743
10.1007/978-3-642-37247-6_33